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相关概念视频

Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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基于振动的尖端毛细血管的声学原子化诱导的送.

Balapuwaduge Lihini Mendis1, Ziyi He2, Xiaojun Li1

  • 1C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA.

Micromachines
|June 28, 2023
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概括
此摘要是机器生成的。

一个新的声学使用振动毛细血管来产生微流体应用的负压. 这种简单,灵活的方法可以在实验室芯片设备和复杂的测试中精确控制流体.

关键词:
声流体是一种声流体.基于原子化的抽.振动的尖尖尖尖的尖端.

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科学领域:

  • 微流体学 微流体学
  • 声学操纵是一种声学操纵.
  • 生物技术是生物技术.

背景情况:

  • 微流体系统需要精确的流体处理,用于芯片上的实验室应用.
  • 现有的抽水方法往往缺乏简单性,足迹小,或灵活性.
  • 开发新的技术对于推进微流体技术至关重要.

研究的目的:

  • 为微流体应用引入一种新的声学.
  • 研究通过液体原子化产生负压的机制.
  • 在复杂的测试中证明的多功能性和性能.

主要方法:

  • 一个振动的尖尖毛细血管诱导液体原子化,产生负压.
  • 系统地研究参数,包括频率,输入功率,毛细血管内部直径 (ID) 和液体粘度.
  • 在基于珠子的ELISA中,同时进行双操作和应用的演示.

主要成果:

  • 通过调整毛细管ID (30-80μm) 和输入功率 (1-5Vpp) 来实现3到520μL/分钟的流量范围.
  • 使用双进行平行流体流程的可调节流速比.
  • 在3D打印的微型设备中成功执行了基于珠子的酶链接免疫吸收试验 (ELISA).

结论:

  • 声学为微流体送提供了一个简单,无微结构和灵活的解决方案.
  • 该技术允许精确控制流量和复杂的流体操作.
  • 这种新的送方法对各种实验室芯片应用和综合测试具有重大潜力.